crash: hotplug support for kexec_load()

[linux-2.6-microblaze.git] / include / linux / kexec.h

diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index 172e9a5..32c7807 100644 (file)
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -320,6 +320,10 @@ struct kimage {
        unsigned int preserve_context : 1;
        /* If set, we are using file mode kexec syscall */
        unsigned int file_mode:1;
+#ifdef CONFIG_CRASH_HOTPLUG
+       /* If set, allow changes to elfcorehdr of kexec_load'd image */
+       unsigned int update_elfcorehdr:1;
+#endif
 
 #ifdef ARCH_HAS_KIMAGE_ARCH
        struct kimage_arch arch;
@@ -396,9 +400,9 @@ bool kexec_load_permitted(int kexec_image_type);
 
 /* List of defined/legal kexec flags */
 #ifndef CONFIG_KEXEC_JUMP
-#define KEXEC_FLAGS    KEXEC_ON_CRASH
+#define KEXEC_FLAGS    (KEXEC_ON_CRASH | KEXEC_UPDATE_ELFCOREHDR)
 #else
-#define KEXEC_FLAGS    (KEXEC_ON_CRASH | KEXEC_PRESERVE_CONTEXT)
+#define KEXEC_FLAGS    (KEXEC_ON_CRASH | KEXEC_PRESERVE_CONTEXT | KEXEC_UPDATE_ELFCOREHDR)
 #endif
 
 /* List of defined/legal kexec file flags */
@@ -486,6 +490,8 @@ static inline void arch_kexec_pre_free_pages(void *vaddr, unsigned int pages) {
 static inline void arch_crash_handle_hotplug_event(struct kimage *image) { }
 #endif
 
+int crash_check_update_elfcorehdr(void);
+
 #ifndef crash_hotplug_cpu_support
 static inline int crash_hotplug_cpu_support(void) { return 0; }
 #endif
@@ -494,6 +500,10 @@ static inline int crash_hotplug_cpu_support(void) { return 0; }
 static inline int crash_hotplug_memory_support(void) { return 0; }
 #endif
 
+#ifndef crash_get_elfcorehdr_size
+static inline unsigned int crash_get_elfcorehdr_size(void) { return 0; }
+#endif
+
 #else /* !CONFIG_KEXEC_CORE */
 struct pt_regs;
 struct task_struct;